| /* |
| * Copyright (c) 2017-2018 ARM Limited. |
| * |
| * SPDX-License-Identifier: MIT |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a copy |
| * of this software and associated documentation files (the "Software"), to |
| * deal in the Software without restriction, including without limitation the |
| * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or |
| * sell copies of the Software, and to permit persons to whom the Software is |
| * furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be included in all |
| * copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| * SOFTWARE. |
| */ |
| #include "arm_compute/graph/nodes/BranchLayer.h" |
| |
| #include "arm_compute/graph/Error.h" |
| #include "arm_compute/graph/Graph.h" |
| #include "arm_compute/graph/SubGraph.h" |
| #include "arm_compute/graph/Tensor.h" |
| #include "arm_compute/runtime/IFunction.h" |
| #include "support/ToolchainSupport.h" |
| #include "utils/TypePrinter.h" |
| |
| #include <memory> |
| #include <tuple> |
| #include <vector> |
| |
| using namespace arm_compute::graph; |
| |
| /** Branch function */ |
| class BranchFunction final : public arm_compute::IFunction |
| { |
| public: |
| /** Default Constructor */ |
| BranchFunction() |
| : _graphs() |
| { |
| } |
| /** Registers graph to be executed by the branch function |
| * |
| * @param[in] graph Graph to register |
| */ |
| void register_graph(std::unique_ptr<Graph> graph) |
| { |
| _graphs.push_back(std::move(graph)); |
| } |
| // Inherited methods overriden: |
| void run() override |
| { |
| for(auto &g : _graphs) |
| { |
| ARM_COMPUTE_ERROR_ON(g.get() == nullptr); |
| g->run(); |
| } |
| } |
| |
| private: |
| std::vector<std::unique_ptr<Graph>> _graphs; |
| }; |
| |
| std::unique_ptr<arm_compute::IFunction> BranchLayer::instantiate_node(GraphContext &ctx, ITensorObject *input, ITensorObject *output) |
| { |
| ARM_COMPUTE_ERROR_ON(_branch_merge_method != BranchMergeMethod::DEPTH_CONCATENATE); |
| ARM_COMPUTE_UNUSED(_branch_merge_method); |
| ARM_COMPUTE_ERROR_ON_UNALLOCATED_TENSOR_OBJECT(input, output); |
| |
| // Create branch function |
| auto func = arm_compute::support::cpp14::make_unique<BranchFunction>(); |
| |
| // Track output depth |
| int depth = 0; |
| |
| // Constuct all sub-graphs given the input/output |
| for(auto &sg : _sub_graphs) |
| { |
| ARM_COMPUTE_ERROR_ON(sg.get() == nullptr); |
| |
| // IO buffers |
| std::unique_ptr<ITensorObject> in; |
| std::unique_ptr<ITensorObject> out; |
| SubTensor *out_sub_tensor = nullptr; |
| |
| // Create input sub-tensor |
| if(!sg->has_input()) |
| { |
| ARM_COMPUTE_ERROR_ON(dynamic_cast<Tensor *>(input) == nullptr); |
| in = arm_compute::support::cpp14::make_unique<SubTensor>(*dynamic_cast<Tensor *>(input), |
| input->tensor()->info()->tensor_shape(), |
| Coordinates()); |
| } |
| |
| // Create output sub-tensor |
| if(!sg->has_output()) |
| { |
| ARM_COMPUTE_ERROR_ON((dynamic_cast<Tensor *>(output) == nullptr) && (dynamic_cast<SubTensor *>(output) == nullptr)); |
| |
| out = arm_compute::support::cpp14::make_unique<SubTensor>(output->tensor(), |
| TensorShape(), |
| Coordinates(0, 0, depth), |
| output->target(), |
| true); |
| out_sub_tensor = dynamic_cast<SubTensor *>(out.get()); |
| } |
| |
| // Construct sub_graph |
| auto g = sg->construct(ctx, std::move(in), std::move(out)); |
| |
| // Register graph to function |
| func->register_graph(std::move(g)); |
| |
| // Update and track depth |
| if(out_sub_tensor != nullptr) |
| { |
| ARM_COMPUTE_ERROR_ON(out_sub_tensor->tensor() == nullptr); |
| depth += out_sub_tensor->tensor()->info()->tensor_shape()[2]; |
| } |
| } |
| |
| return std::move(func); |
| } |